Wilson's victory was partly due to the division of the opposition Republican Party into conservative and progressive factions. While many progressives stayed within the party framework, they maintained lukewarm relationships with Republican leadership. Others formed a third party known as the Progressives and several switched allegiance to the Democrats. A message of unity was portrayed by the Democrats, allowing this group to present themselves as above the bickering and corruption that had become associated with the Republican internal feud. Many of the new seats that were added after the prior census ended up in Democratic hands. In addition, William Kent, who had been elected to the House as a Republican in 1908, was elected to California's 1st congressional district as an Independent.

The number of representatives was increased for this election to 435, where it currently stands (aside from 1959 when Alaska and Hawaii were admitted as states).

Election summaries

In reapportionment following the 1910 census,[citation needed] 41 new seats were added, bringing the House to its modern size. This would be the last time the size of the House changed, except for a temporary addition of two seats in 1959 after the admission of Alaska and Hawaii and subsequent return to 435 in 1963. In the reapportionment, 1 state lost 1 seat, 22 states had no change in apportionment, 16 states gained 1 seat each, 5 states gained 2 seats each, 2 states gained 3 seats, 1 state gained 4 seats, and 1 state gained 6 seats. Twelve states used at-large seats in addition to districts to elect new seats.

Utah

The Utah election consisted of an all-party general ticket election to the two at-large seats. Howell was elected to the first at-large seat, while Johnson was elected to the second at-large seat, but they were nevertheless placed in districts.